Pryor, considered one of 2014's most vulnerable incumbents, has now cut two television spots that paint ObamaCare as a positive force without specifically mentioning the law.

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"Insurance companies were charging $115 for every $100 of services, ripping off taxpayers," Pryor tells the camera in the new ad.

"Cutting this waste adds years to the life of Medicare and provides for more doctor visits and preventative care. ... I approve this message because making sure seniors get the care they need is responsible," he adds.